Practical Operational Calculations: Flow, Volume & Feed Rates

A practical operator-math course focused on calculations used in routine utility work rather than certification-exam preparation. It covers unit conversions, flow, rectangular and cylindrical tank volume, detention time, pounds-per-day loading, and simple feed-rate reasoning. Learners solve short operational examples and interpret whether results are reasonable.

What you’ll learn

• Convert common operational flow units, including gpm, gpd, and MGD.
• Calculate approximate volume for rectangular and cylindrical tanks using provided dimensions.
• Calculate detention time when volume and flow are known.
• Use the standard pounds-per-day relationship when concentration and MGD are known.
• Check whether a calculated result is reasonable before using it operationally.

Course outline

1. Course Orientation
2. Section 1 — Units and Flow Conversions
3. Knowledge Check 1
4. Section 2 — Tank Volume
5. Knowledge Check 2
6. Section 3 — Detention Time and Pounds per Day
7. Knowledge Check 3
8. Section 4 — Feed-Rate Reasoning and Reasonableness Checks
9. Practical Calculation Scenario
10. Final assessment

Who this course is for

North Carolina drinking-water and wastewater operators.

Prerequisites: Basic arithmetic; calculator recommended